Improved ioe-oeeam freezer



0. PADDOCK. Ice-Cream Freezer.

Patented Oct. 15, 1867.

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OSCAR PADDO CK, or WATERTO WN, NEW YORK. Letters Patent No. 69,833,dated October 15, 1867.

IMPROVED ICE-CREAM FREEZER.

TO WHOM IT MAY concerns:

Be it known that I, OSCAR PADDOCK, of Water-town, in the county ofJefferson, and State of NewYork, have invented certai'n new and usefulImprovements in Ice-Cream Freezers; and I hereby declare the followingto be' a full, clear, and exact description of the same, referencelicing had to the accompanying drawings, i1

whichp Figure 1 is a vertical central section of a freezer constructedin accordance with myinvention.

Figure 2 is a top view, and

Figure 3 an elevation of the same on a reduced scale.

The object I have in view in the invention, the subject of thisapplication, is to simplify and improve the construction and arrangementof ice-cream freezers, more particularly those in which the cream-vesselor holder is arranged to rotate .upon its axis within the tub or largervessel in which the ice is contained My invention consists principallyin combining the revolvablc cream-vessel with the cover or cap whichfits over its top, in such manner that during therotary movement of thesaid vessel its cover shall remain stationary. By thus combining the twothe cover has two functions: it not only covers or closes the top of thecream-holder, but also constitutes the means by which the latter ismaintained upright and in proper position;

for, during the rotation of the cream-holder, its upper end .will'slideor move around within the cover, which,

remaining stationary, forms a bearing for'supporting the said holder andguiding its movement.

invention further consists in the combination of the special deviceswhichI prefer to use in order to accomplish the result above named; andit also has relation to the improved construction of the cream-vesselitself and the bearing or frame upon which the bottom of "the holder orvessel rests; the object of these latter features of my invention beingto facilitate the operation of turning out the solidified or'frozencream from the holder, and also to prevent the latter from being raisedor separated from its bearing by the action of the ice and watercontained in the tub.

To enable those skilled in the art to understand and use my invention,Iwill now proceed to describe the manner in which the same is or may becarried into effect, by reference to the accompanying drawings.

' A represents the ice-tuber bucket within which is placed thecream-holder B. In order tonfacilitate the rotation of .this lattervessel a. pivot, a, is formed on its bottom, on which pivot the vesselrevolves Within the vessel this pivot is countersunk, or has' asocketmade in it, to form a bearing for the spindle by which rotary movementis imparted to the holder; the construction and arrangement of thisportion of the apparatus being similar 'to that described in LettersPatent heretofore granted'me. The pivot cheats in a socket, e, formed ina metal frame, 0 d, the upper portion 0 of which consists of a circularplate a little less in diameter than the bottom of the cream-vesseL-This frame rests onthe bottom of the tub, and is secured thereto by abolt,f, the head of which is held'in the bottom of the socket c. Thelower end of the bolt passes through the bottom of ,the tub,.and is heldby means of a nut. Extending downwards from the bottom'of thecream-holder are hooks or catches, g, which may be cast in one piecewith the bottom if desired. Slots h are formed in the edge of thecircular plate a, and thecatches g and slots are so arranged as tooccupy the same relative posi* tions upon the plate and bottomof thecream-holdery so that when the holder is placed upon the plate thecatches y will pass down through the slots; If the cream-holder berotated after being thus placed it will be seen that the hooksg willcatch under that portion of the plate which is not slotted, and thushold the creanv vessel firmly in its hearing. In ice-cream freezers, asheretofore construeted, no meansare provided for thus holding thecream-vessel, so that when the vessel is not held down by pressure fromabove the water and ice contained in the tub will, in many instances,float the vessel or cause it to be lifted and separated from itsbearing. The object of the above-described arrangement is to remedy thisdiificulty. When the vessel is turned upon its pivot a, so as to bringthe catches under the unslotted portion of the plate, the cover can beremoved with facility, and all pressure from above may be 'removedwithout danger of deranging the position of the-vesseh while, on theother hand, by turning the vessel so as to bring the catches under oropposite to the slots, the whole vessel can be detached from its bearingand lifted from the tub without trouble The creamvessel is provided witha cover, 0, which is fastened securely and immovably to a cross-bar, D,resting on the top of the tub, and secured thereto in the mannerhereinafter explained. The spindle E bears, as above mentioned, in asocket, I in the bottom of the cream-vessel, and is provided with aseries of arms or heaters, 2'. When the shaft is revolved its lower armscome in contact with studs 7: projecting from the bottom of thecreamholdcr, the latter being thus caused to move or rotate in unisonwith the spindle. On the upper end of the spindle, which passes upthrough both the cover C and cross-bar D, is mounted a crank, Z, bymeans of which the necessary rotary movement is imparted to the spindleand cream-holder. As the cover C is fastened firmly and securely to thecross-bar D, which in turn is made fast to the tub, it will be seen thatwhen the spindle is rotated it will communicate motion to thecream-holder alone, the cover remaining immovable. Thus the upper end ofthe cream-vessel revolves or slides around within the cover, which formsa bearing for centering and stcadying the vessel in its movement. Theflange or annular portion 171 of the cover and the upper end it of thecream-holder, which moves within such annular portion, may be made ofgreater thickness and solidity than lllt' other parts of the cover andholder, as represented in the drawings. There is a stud or stop, whichprojects from the interior of the cover, whose function is, during therevolution of the cream-vessel, to arrest the movement of a frame, F,mounted loosely on the spindle, and provided with a series of arms, 2',arranged opposite the intervals between the armsz' on the spindle. Thisframe is also provided with a wooden scraper, 1', the arrangement of thewhole being similar to that described in Letters Patent heretoforegranted me. When the shaft is revolved the frame F catches against thestop 1), and is held stationary during the continuance of the rotarymovement of the cream-vessel. It is obvious that the cover C may be heldstationary in many ways, and that it can, if necessary, be secured orattached directly to the tub by means of arms extending from the coverto the sides of the tub. I prefer, however, to secure it to thecross-bar D, which is combined with the ice-tub in such manner as to bereadily fastened to or removed from the same. The bar is cut away ateach end, as shown at s, fig. 1, so that it shall partly fit between thesides of the tub, and at the same time rest upon the top of the same. Itis thus capable of being moved around or rotated upon the axis of thetub or its centre, the shoulders s, which bear against the sides of thetub, holding it in proper position. In order to secure the bar so as toprevent it from being lifted or moved from the tub while the apparatusis in operation, catches s are secured to each side of the tub,diametrically opposite each other, or nearly so. Each catch is formed ofa piece of angle-iron, the shank being attached to the side of the tubby suitable means. The upper part, which stands at right angles to theshank, is at a suitable distance above the top of the tub, and isparallel, or nearly so, therewith. These catches thus, in effect,constitute jaws, which open in opposite directions, the one jaw beingopen at a, while the other is open at y, (see fig. 3.) The cross-bar D,when placed on the tub, as above explained, is moved around upon theaxis of the tub as its centre until its ends pass under the catches sand are brought against the shanks or upright portions of the same, asshown in fig. 3, and in black lines in fig. 2. So long as the bar is inthis position it cannot be lifted out from the tub; and in order toprevent its being moved out from under the catches, a locking device isemployed at each end, consisting of a bolt or latch, t, which is pivotedto the side of the cross-bar, and is intended to fit in a notch or slot,11, formed in the edge or top of this tub. When the cross-bar is in theposition shown in black lines in fig. 2, the latches t are pressed downuntil they fit in their respective slots v, and the bar is thus firmlysecured to the tub. When it is desired to remove the bar the bolts areraised or swung back, as represented in fig. 3, and the bar can then bemoved out from under the catches s to the position shown in red lines,fig. 2.

It is well known that considerable difiiculty is ordinarily experiencedin turning out the-solidified or frozen cream fromthe holder, and thatbefore the cream can be removed the vessel must be heated in order topartially melt the cream, a considerable portion of which, in manyinstances, is reduced to a liquid form before the removal is eifccted.This ditficulty arises not only from the adhesion of the cream to thesides of the holder, but also from the fact that the passage of thecream from the holder tends to form a. vacuum in the vessel. 111ordinary freezers the air to fill this vacuum enters through the mouthof the vessel, and must pass up nearly the whole length of the samebefore it reaches the point where the yacuum exists. This not only makesthe operation of turning out the cream troublesome, but renders itnecessary to melt a much greater portion of the cream than wouldotherwise be required. To obviate this diificulty, I form a vent or holein the bottom of the cream-holder, which is closed by a screw-plug, w,fig. 1, or other equivalent means. This plug remains in the vessel whilethe cream is being frozen, but when it is desired to turn out thesolidified cream the plug, after the vessel has first been slightlyheated in order to detach the cream from its sides, is removed, leavingthe vent or hole in the bottom open. The cream can now be turned outwith perfect facility, the air passing into the vessel through the ventin the bottom as the cream passes out, and preventing in any degree theformation of a vacuum.

Having now described my invention, and the manner in which the same isor may be carried into effect, what I claim, and desire to secure byLetters Patent, is as follows:

1. In an ice cream freezer in which the cream-vessel is arranged torotate upon its axis as described, I claim the combination with thecream-vessel of a stationary cover, which constitutes the bearing inwhich the upper portion of said vessel is supported and moves during itsrotary movement, substantially as shown and set fortln 2. Thecombination, in an ice-cream freezer, as described, with thecream-vessel and spindle for rotating the same, of the cover for saidcream-vessel and cross-bar to which it is attached, under thearrangement sub stantially as herein shown and specified.

3. The combination, with the stationary cream-holder cover and the stopor catch which it carries, of the frame F mounted upon the spindle andwithin the rotary cream-holder, substantially in the manner and for thepurposes set forth.

4. The combination of the crossbar and the bolts or latches pivoted toit, as described, with the catches mounted on tho ice-tub and the slotsformed in the said tub, under the arrangement and f tially as set forth.

5. The combination, with tho cream-vessel or holder and catches or hooksupon its b centre bearing upon which the said vessel is supported andpivoted, substantially as n described. a

6. The method herein indicated of facilitating the removal of the frozenor solidified c in which it is contained by forming in the bottom ofsaid vessel one or more vents or opc tance of air to the interior ofsaid vessel while the cream is passing out from the same, closed byscrew-plugs or other suitable means, as set forth.

In testimony whereof I have signed my name to this specification beforetwo silbser Witnesses:

B. 1%. Moms, G. L. Woomwm

